G311382329 12.7 mm Dia. N-BK7 Double-Convex Lens; EFL=20mm 1064nm

This is a G311382329 12.7 mm diameter N-BK7 double-convex lens, specifically designed for use with a center wavelength of 587.6 nm and an Effective Focal Length (EFL) of 20 mm. The lens is sourced from Qioptiq Photonics, a renowned vendor in the field of precision optics.

The lens is a spherical design, featuring a base shape that is circular. It has a diameter of 12.7 mm and a thickness at the edge of 0.9 mm. The center thickness of the lens is 3 mm, providing a robust structure for various applications. The lens's EFL is 20 mm, making it suitable for use in systems that require a moderate focal length.

The lens is made from N-BK7, a popular glass type in the optical industry known for its excellent optical properties. The radii of curvature for the lens are r1 = 20.097 mm and r2 = -20.097 mm, which are symmetrically convex. This design allows for a wide range of applications, particularly in systems where a high level of light concentration is required.

The lens features anti-reflection coatings on both the front and back surfaces. The coating is Qio HP Nbar ARHS-YAG, which is specifically designed for high power lasers in the YAG range. This coating ensures minimal loss of light due to reflection, maximizing the efficiency of the optical system in which the lens is used.